Casement window operator



May 13, 194i. H ST 2,241,513

CASEMEN'L WINDOW OPERATOR Filed April 21, 1939 ZShoets-Sheet 1 Patented May 13, 1941 CASEMENT WINDOW OPERATOR Gotthard Hagstrom, Westville, Conn, assignor to The H. B. Ives Company, New Haven, Conn, a corporation of Connecticut Application April (21, 1939, Serial No. 269,107

'7 Claims.

This invention relates to casement Window operators, and more particularly to a device adapted to be mounted upon the window frame of a so-called casement window, which device is provided with a swinging arm designed to be slidably connected with a guide upon the Window itself, so that, when the arm is rotated, the window sash will be moved to open and closed positions.

The invention particularly relates to a device of this character which will be economical to manufacture, and at the same time be positive in operation and easily manipulated.

Another object of the invention is the provision of a casement window operator of relatively inexpensive construction, which may be actuated through a screen when the latter is placed upon the inside of the window frame.

A still further object of the invention is the provision of a casement window operator of the character disclosed, which will be constructed that there will be no play or loose motion between the parts, so that the window will be securely held in adjusted positions.

To these and other ends the invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the drawings:

Fig. 1 is a front elevational View of a frag,

ment of a casement window upon which is mounted a window operator embodying my invention;

Fig. 2 is a top plan view of the operator showing portions of the window in section;

Fig. 3 is a sectional view on line 33 of Fig. 2;

Fig. 4 is a sectional View on line 44 of Fig. 3;

Fig. 5 is a sectional View on line 5-5 of Fig. 3;

Fig. 6 is a bottom plan view of the inner end portion of the operating arm and gear;

Fig. 7 is an exploded view of the parts shown in Fig. 6;

Fig. 8 is a perspective View of the slider mounted upon the outer end of the operating arm;

Figure 9 is a perspective view of the spring employed in connection with the slider;

10 is a top plan view of a modified form of casing to contain the worm and gear;

Fig. 11 is a side elevational View of the parts shown in Fig. 10; and

Fig. 12 is a sectional view on line l2l2 of Fig. 19.

In order to illustrate a preferred embodiment of my invention, I have shown in a fragmentary fashion a casement window it hinged at H to the usual frame 12. Upon the lower sash member of the window i0 is secured a guide l3 which may be fastened to the window sash by means of the screws !4. As shown in Figs. 4 and 5, this guide is of U-shaped or channel-shaped form having a web portion l5 which abuts flatly against the window sash, and laterally projecting legs I5 and IT. The upper leg I], as is shown, is slightly longer than the lower leg, and has depending therefrom a flange it so as to form a guideway between this flange and the base or web portion l5 of the guide member.

Mounted to slide in this guideway is a member 19, shown more especially in Figs. 4, 5 and 8. This member comprises a body portion substantially triangular in form, having at opposite corners upstanding cars 29. Upon the third corner is provided an opening 2! designed to receive a rivet 22 for a purpose to be hereinafter described. Between the ears 29 the body portion of the slider is struck downwardly so that the metal thereof is displaced from the plane of the body portion to form a downwardly projecting lug or shoe 23. As may be seen from Figs. 4 and 5, the body portion of therslider enters between the legs IS and I! of the guide member 13, with the shoe 23 sliding upon the lower leg I6, and the upstanding ears being received within the space between the web portion 15 and the depending flange l8.

A spring member 24, shown more especially in Fig. 9, is secured to the slider is by the rivet 22. The body portion of the spring is substantially the same shape as the body portion of the slider. At its rear end the spring is provided with an up-turned flange 25 which is of arcuate cross sectional shape vertically, as shown in Fig. 5. This portion 25 of the spring stands between the ears 2E8, and the convex face of the bowed portion is adapted to bear against the flange I8 so as to hold the ears 2% against play in the space between the members I 5 and E8. The ears are made of substantially the size to fit this space, but in case of any irregularity in their size, this will be taken up by the spring, and the rear edges of the ears will be forced by the spring against the part l5 of the guide.

The member I9 is pivotally secured by the rivet 22 to the outer free end of an operating arm 26. This arm, as shown in Figs. 3, 6 and 7, is channelshaped in cross section, having depending flanges 21. At the inner end of the arm the flanges are omitted, as shown in Fig. '7, so that at this end a plane flat portion is provided which is of arcuate shape, and, as shown in Fig. 7, provided with partial gear teeth 28. This member, as will be obvious, may be made conveniently by a stamping operation, even to the formation of the teeth 28. It will also be apparent from Fig. 7 that the teeth are slightly deeper adjacent the lower surface of the member 26 than adjacent the upper surface, for a purpose to be hereinafter described.

Cooperating with the member 26 is a second gear and arm part comprising a short arm portion 29 and a round gear portion 30 having teeth 3|. The parts 26 and 28 may be placed in superposed position, as shown in Fig. 3, with the part 28 fitting snugly between the flanges 21 so that the gear teeth 28 and 3| register with each other to form a completed gear having teeth, as shown in Figs. 1 and 11. These gear teeth are slightly angled so as to cooperate with the worm 32, and are also deeper in the center than at the upper and lower edges. It will :be observed that the teeth 3i are deeper at the upper edge of the member 30 than at the lower edge, so that when the members 26 and 29 are placed in abutting relation the deeper cut portions of. the gear members will be together to thus form teeth of the desired shape to accommodate the worm. The mutilated gear thus formed is like a hobbed gear in all substantial respects, but constructed in two parts, as described, it may readily be made by an economical stamping operation.

The worm 32 is housed in the closed end of a U-shaped housing member 34, this portion of the housing having side members 35 to cover the ends of the worm and prevent longitudinal movement thereof. The members 35 are provided with openings to receive a crank shaft 36, which is adapted to fit into a non-circular opening 31 in the worm in order that the latter may be rotated by the crank 38. The housing 34 may be secured by rivets 39 to a mounting plate 40, which may be secured by screws 4| to the window frame member I2.

After the parts 26 and 29 of the operating arm are assembled, spacing members 42 may be placed above the member 26 and below the member 29 so as .to take up the space between the members 26 and 29 and the upper and lower arms of the U-shaped housing 34, as shown in Fig. 3. These spacing members may be held in place by the hollow sleeve or rivet 43. After these parts have been assembled the complete arm is inserted between the upper and lower legs of the U-shaped housing 34, and a rivet 44 inserted into the sleeve 43 serves to hold the operating arm and worm in assembled relation in the casing. It will be understood, of course, that the sleeve 43 is rotatable upon the rivet 44, so that the arm 26 will be freely rotated upon rotation of the worm 32. It may also be observed that the rivet 43 extends only through the lower leg of the U-shaped casing 34, and does not project through the plate 40, the lat ter plate being provided with an opening 45 to permit the riveting operation.

As seen from Fig. 7, the spacing members 42 are provided with base flanges 42 and these flanges may be formed with teeth 42 to register with the gear teeth 28 and 3| so as to accommodate the worm 32. If desired, of course, the flanges may be made sufiiciently narrow at this point so that it is not necessary to provide such teeth.

In Figs. 10, 11 and 12 of the drawings I have shown a construction of somewhat modified form, the modification consisting only, however,

in a change in the manner of securing the U- shaped casing 34 in position. Instead of using a flat plate 40, to which this case is riveted, as shown in Figs. 1 to 3, I employ a housing 50, shown in Figs. 10, 11 and 12. This housing comprises a member completely open at its lower end so that it may be placed over the top of the U-shaped member 34, and it is provided with a down-turned flange 5| to overhang and conceal the upper portion of this member. Rearwardly of this flange the sides of the casing adjacent the worm 32 are closed, as shown at 52, and an opening 53 is provided to receive the shank of the crank. At the rear portion of this casing is a laterally turned base flange 54 provided with openings 55 through which screws may be inserted to secure the device to the window casing. At the front of the casing the parts are secured in place by means of screws passed through the openings 56 in the lower leg of the U-shaped casing 34. It will be apparent that as the flange 5| fits snugly about the upper portion of the casing 34, the parts will be effectively held in place. The connection between them is made still more rigid by the fact that the rivet 44 is inserted through the top portion of the casing 50, as Well as through the legs of the U-shaped casing 34.

It will be apparent that in both illustrated forms of the device there is provided a casement window adjuster of very simple construction, the parts of which may be economically made and assembled with comparatively few operations. The worm member 32 is held in place in its U- shaped casing by the gear formed at the end of the arm 26, so that it is unnecessary to provide any bearings for this worm. Moreover, clue to the particular shape of the gear teeth formed in the manner shown, a very tight fit is provided between these teeth and the worm, so that there will be little or no play between these parts, and the arm 26 will be positively operated in both directions without lost motion, and will hold the Window in any adjusted position. Moreover, the arrangement of the guide member on the window sash and the slider l9 operating therein is such as to prevent looseness or play between these parts, any play being taken up by the spring 24.

While I have shown and described some preferred embodiments of my invention, it will be understood that it is not to be limited to all of the details shown, but is capable of modification and variation within the spirit of the invention and within the scope of the appended claims.

What I claim is:

1. A casement Window operator comprising an operating arm having depending side flanges for the greater part of its length and an end portion beyond said flanges of circular shape, a second arm disposed snugly between said flanges and having an end portion shaped similarly to that of said first arm, said end portions being in superposed position and having complemental gear teeth portions formed therein whereby a helical gear member is formed by said end portions, and means to prevent separation of said end portions whereby said means and the snug fit of the second arm between the flanges of the 'first holds said parts rigidly together.

2. A casement window operator comprising an operating arm having dependingside flanges for the greater part of its length and an end portion beyond said flanges of circular shape, a secnd arm disposed snugly between said flanges and having an end portion shaped similarly to that of said first arm, said end portions being in superposed position and having complemental gear teeth portions formed therein whereby a helical gear member is formed by said end portions, spacing members on opposite faces of said end portions, and means passing through said spacing members and the end portions of said arms to hold said parts in assembled relation.

3. A casement window operator comprising a housing adapted to be secured to the window frame, a worm rotatably mounted in said housing, a rigid gear and arm construction pivoted in said housing in cooperatve relation with said gear, said construction comprising an upper gear portion having an arm member formed integrally therewith, said member having depending side flanges, and a lower gear portion also having an arm integral therewith, said gear portions being of the same size and disposed in superposed relation with the arm of the lower thereof fitting between the flanges of the upper arm, said gear portions having complemental tooth members formed therein whereby said gear portions when superposed form a toothed worm gear to cooperate with said worm, and means for securing said gears together to form a rigid structure.

4. A casement window operator comprising a housing adapted to be secured to the window frame, a worm rotatably mounted in said housing, a rigid gear and arm construction pivoted in said housing in cooperative relation with said gear, said construction comprising an upper gear portion having an arm member formed integrally therewith, said member having depending side flanges, and a lower gear portion also having an arm integral therewith, said gear portions being of the same size and disposed in superposed relation with the arm of the lower thereof fitting between the flanges of the upper arm, said gear portions having complemental tooth members formed therein whereby said gear portions when superposed form a toothed worm gear to cooperate with said worm, cup-shaped spacing members placed on opposite sides of said gear portions, and a hollow rivet passing through said spacing members and gear portions to secure the parts together.

5. A casement window operator comprising a housing adapted to be secured to the window frame, a worm rotatably mounted in said housing, a rigid gear and arm construction pivoted in said housing in cooperative relation with said gear, said construction comprising an upper gear portion having an arm member formed integrally therewith, said member having depending side flanges, and a lower gear portion also having an arm integral therewith, said gear portions being of the same size and disposed in superposed relation with the arm of the lower thereof fitting between the flanges of the upper arm, said gear portions having complemental tooth members formed therein whereby said gear portions when superposed form a toothed worm gear to cooperate with said worm, cupshaped spacing members placed on opposite sides of said gear portions, and a hollow rivet passing through said spacing members and gear portions to secure the parts together, said spacing members having laterally extending flanges overlying the gear members, and said flanges having teeth formed therein to register with the teeth of said gear portions.

6. A casement window operator comprising a pair of superposed disk-like members, complemental gear teeth portions provided on the periphery of said members, said teeth portions together forming a series of gear teeth, an arm rigid with one of said members and having downturned flanges thereon, an arm rigid with the other of said members having a portion disposed between said flanges to prevent angular movements of the parts, and means to secure said members against separation.

7. A casement window operator comprising an operating arm having a substantially flat end portion of circular shape, a reinforcing member applied flatly to the under side of said arm and having an end portion of substantially the same size and shape as that of said arm and having a body portion extending forwardly along the arm, said circular end portions being in superposed position and having complemental gear teeth portions formed in the peripheries thereof, said gear teeth being slightly angled and of greater depth adjacent the abutting surfaces of said members than adjacent the outer surfaces to form jointly a helical gear segment at the end of the arm the thickness of which is substantially equal to that of the arm and reinforcing member, and means to secure said arm and reinforcing member against separation.

GO'I'IHARD HAGSTROM. 

